68728914 has 24 divisors (see below), whose sum is σ = 149228352. Its totient is φ = 22861080.

The previous prime is 68728901. The next prime is 68728937. The reversal of 68728914 is 41982786.

It is a self number, because there is not a number n which added to its sum of digits gives 68728914.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 5259 + ... + 12849.

It is an arithmetic number, because the mean of its divisors is an integer number (6217848).

Almost surely, 2^68728914 is an apocalyptic number.

68728914 is an abundant number, since it is smaller than the sum of its proper divisors (80499438).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

68728914 is a wasteful number, since it uses less digits than its factorization.

68728914 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8102 (or 8099 counting only the distinct ones).

The product of its digits is 193536, while the sum is 45.

The square root of 68728914 is about 8290.2903447346. The cubic root of 68728914 is about 409.6187493007.

The spelling of 68728914 in words is "sixty-eight million, seven hundred twenty-eight thousand, nine hundred fourteen".